The table below shows the weights z to the nearest pound, heights x to the nearest inch, and ages y to the nearest year, of 12 boys. determine the estimated values of z from the given values of x and y. Weight (z) 64 71 53 | 67 | 55 | 58 | 77 | 57 | 56 51 | 76 | 68 Height (x) 57 59| 49| 62 | 51 50 | 55 | 48 | 52 | 42 | 61 57 Age (y) 10 6 11 7 10 10 12

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